In message , at 16:07:44 on Fri, 8 Sep 2017,
Graeme Wall remarked:

An evaluation of the trial, published today, shows that passengers
used 18 routes to go between King’s Cross/St Pancras and Waterloo,
the busiest stations on the network, with 40 per cent of people who
were tracked failing to take the two fastest routes. The data showed
that even within stations a third of passengers did not use the
quickest routes between platforms and could be wasting up to two minutes.

I'm still trying to work out 18 different ways to travel between the
two by tube.

Did you include Mornington Crescent? (Reverse at Camden Town.)
--
Roland Perry